Analytical Suite Metadata

Barringer (lake sediments) FLUOR (U)

Barringer, lake sediments; fluorometry (uranium)

General Methodology:

For the determination of U, a 1 gram sample was reacted with 6 ml of a mixture of 4M HCl and M HNO3 in a test-tube overnight at room temperature. After the overnight digestion the test-tube was immersed in a hot water bath at room temperature and brought up to 90oC and held at this temperature for 1 hour with periodic shaking.  The sample solution was then diluted to 20 ml with metal free water and mixed.  A 0.1 ml aliquot of the sample solution was used to determine U by a fluorometric method described by Smith and Lynch (1969).  A Turner fluorometer was used for the fluorescence measurements in place of the Jarrel-Ash described in the Smith and Lynch paper.


Smith, A.Y. and Lynch, J.J. (1969).  Field and laboratory methods used by the Geological Survey of Canada in geochemical surveys: no. 11, Uranium in soil, stream sediment and water.  Geological Survey of Canada Paper 69-40.


Sample material: solid

Sample weight: 1000 milligrams

Analytical Technique:

Hierarchical classification

Technique >> Photometry >> Fluorometry



Analytical Decomposition:

Hierarchical classification

Decomposition >> Aqueous dissolution >> Acid >> Moderate Acid >> Aqua Regia (s.l.)


Aqua Regia (s.s.) | Lefort | Aqua Regia (Acme/BVM) | Aqua regia (NGR) | Aqua regia (NASGLP)

Analytical Methods:

IndexMethod OrderMethod IDQuantityDetection Limit
1  1176     U_Fluor  0.5

Associated Analytical Packages:

IndexPackage IDPackage Name
1  132     Barringer (URP lake sediment) AAS(8+Mo), FLUOR(U), COL(As)
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